
Moreover, \(A,A^*\)  has no further parameter array.
By [1]} two Leonard pairs over \(\mathbb {F}\)  are isomorphic
if and only if they have a common parameter array.
Now consider a parameter array (REF ) of \(A,A^*\) .
By [2]} the expressions
\(& \frac{\theta _{i-2} - \theta _{i+1} }{ \theta _{i-1} - \theta _i },&& \frac{\theta ^*_{i-2} - \theta ^*_{i+1} }{ \theta ^*_{i-1} - \theta ^*_i } \) 
